Articles | Volume 23, issue 8
Ann. Geophys., 23, 2903–2907, 2005
https://doi.org/10.5194/angeo-23-2903-2005

Special issue: Double Star - First Results

Ann. Geophys., 23, 2903–2907, 2005
https://doi.org/10.5194/angeo-23-2903-2005

  08 Nov 2005

08 Nov 2005

Double Star, Cluster, and ground-based observations of magnetic reconnection during an interval of duskward oriented IMF: preliminary results

J. A. Wild1, S. E. Milan1, J. A. Davies2, S. W. H. Cowley1, C. M. Carr3, and A. Balogh3 J. A. Wild et al.
  • 1Dept. of Physics & Astronomy, University of Leicester, Leicester LE1 7RH, UK
  • 2Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
  • 3Blackett Laboratory, Imperial College, London SW7 2BZ, UK

Abstract. We present a space- and ground-based study exploiting data from the coordinated Cluster and Double Star missions in order to investigate dayside magnetic reconnection under BY+ dominated IMF conditions. In-situ observations of magnetosheath flux transfer events combined with measurements of pulsed poleward and dawnward directed flows in the pre-noon sector high-latitude northern hemisphere ionosphere are interpreted as indications of pulsed magnetic reconnection during an interval in which the IMF remained relatively steady. Observations of newly-reconnected magnetic flux tubes anchored in the northern hemisphere both at mid-latitudes and in the vicinity of the subsolar point suggests that during BY+ dominated IMF, reconnection is not, as proposed previously, limited to the high-latitude magnetopause.